Calculating Power and Range of a Bullet

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SUMMARY

The discussion focuses on calculating the average power delivered to a bullet and determining its range when fired at a specific angle. The initial kinetic energy of a 0.0190 kg bullet is given as 1008 J, leading to a calculated final velocity of 326 m/s. The average power is derived using the formula P = dW/dt, where work done is related to the kinetic energy. The challenge lies in finding the force and the maximum height without knowing the firing angle.

PREREQUISITES
  • Understanding of kinetic energy calculations (KE = (mv^2)/2)
  • Familiarity with power equations (P = dW/dt or P = Fv)
  • Basic knowledge of projectile motion principles
  • Ability to manipulate algebraic equations for solving physics problems
NEXT STEPS
  • Learn how to calculate force using the work-energy principle
  • Study projectile motion to understand the relationship between range and maximum height
  • Explore the concept of average power in physics, specifically in mechanical systems
  • Investigate the effects of different firing angles on projectile trajectories
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and projectile motion, as well as educators looking for practical examples of energy and power calculations.

daivinhtran
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Homework Statement


The initial kinetic energy imparted to a 0.0190 kg bullet is 1008 J.
(a) Assuming it accelerated down a 1.00 m long rifle barrel, estimate the average power delivered to it during the firing.


(b) Neglecting air resistance, find the range of this projectile when it is fired at an angle such that the range equals the maximum height attained.
km

Homework Equations


KE = (mv^2)/2
P = dW/dt or Fv

The Attempt at a Solution


I found the final velocity which is 326
BUt I can't find the force.

How can I find the maximum height without knowing the angle
 
Physics news on Phys.org
And what's actually the formula for average power.
I doubt P = Fv is right
 
Can anyone help me ? :(

Thank you...
 

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